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Characterization of the inter-annual, seasonal, and diurnal variations of condensation particle concentrations at Neumayer, Antarctica

Weller, Rolf und Minikin, Andreas und Wagenbach, Dietmar und Dreiling, Volker (2011) Characterization of the inter-annual, seasonal, and diurnal variations of condensation particle concentrations at Neumayer, Antarctica. Atmospheric Chemistry and Physics, 11, Seiten 13243-13257. DOI: 10.5194/acp-11-13243-2011.

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Offizielle URL: http://www.atmos-chem-phys.net/11/13243/2011/acp-11-13243-2011.html

Kurzfassung

Continuous condensation particle (CP) observations were conducted from 1984 through 2009 at Neumayer Station under stringent contamination control. During this period, the CP concentration (median 258 cmâ��3) showed no significant long term trend but exhibited a pronounced seasonality characterized by a stepwise increase starting in September and reaching its annual maximum of around 103 cmâ��3 in March. Minimum values below 102 cmâ��3 were observed during June/July. Dedicated time series analyses in the time and frequency domain revealed no significant correlations between inter-annual CP concentration variations and atmospheric circulation indices like Southern Annular Mode (SAM) or Southern Ocean Index (SOI). The impact of the Pinatubo volcanic eruption and strong El Ni�±o events did not affect CP concentrations. From thermodenuder experiments we deduced that the portion of volatile (at 125 �°C) and semi-volatile (at 250 �°C) particles which could be both associated with biogenic sulfur aerosol, was maximum during austral summer, while during winter non-volatile sea salt particles dominated. During September through April we could frequently observe enhanced concentrations of ultrafine particles within the nucleation mode (between 3 nm and 7 nm particle diameter), preferentially in the afternoon.

Dokumentart:Zeitschriftenbeitrag
Titel:Characterization of the inter-annual, seasonal, and diurnal variations of condensation particle concentrations at Neumayer, Antarctica
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Weller, RolfAWI Bremerhaven
Minikin, AndreasNICHT SPEZIFIZIERT
Wagenbach, DietmarUniv. Heidelberg, Heidelberg
Dreiling, VolkerUniv. Mainz, Mainz
Datum:21 Dezember 2011
Erschienen in:Atmospheric Chemistry and Physics
Referierte Publikation:Ja
In Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:11
DOI :10.5194/acp-11-13243-2011
Seitenbereich:Seiten 13243-13257
Status:veröffentlicht
Stichwörter:aerosol, Neumayer, condensation particles, non-volatile particles
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Dr.rer.nat. Andreas Minikin
Hinterlegt am:29 Dez 2011 14:02
Letzte Änderung:12 Dez 2013 21:31

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